INDIANAPOLIS — Marcos Ambrose does not have a contract for 2015, but his current team owner wants him to return and another team owner is interested in him but not in NASCAR.

Ambrose, who is 20th in the Sprint Cup standings, is a free agent after 2014 and has dealt with rumors of a return to his native Australia the last few years. But rumors this year have gained steam as Team Penske is looking into racing in the V8 Supercar series in Australia. Ambrose e is a former Supercar champion, and Penske is interested in Ambrose driving the car, according to a recent report on a series website.